Revision of the superfamily Acrotheloidea (Brachiopoda, class Linguliformea, order Lingulida) from the Lower and Middle Cambrian of the Siberian Platform

Abstract

This paper continues our revision of Yu.L. Pelman’s collection of the superfamily Acrotheloidea (phosphatic brachiopods) and of our own material from the Early–Middle Cambrian of the Siberian Platform. The following representatives of the superfamily Acrotheloidea (order Lingulida, class Linguliformea) are restudied and revised based on new techniques: the genus Botsfordia (family Botsfordiidae Schindewolf, 1955) and the genera Acrothele, Eothele, and Orbithele (family Acrothelidae), which are widespread on the Siberian Platform. Only one out of the three Acrothele species described by Pelman is recognized as a valid species, and one new species of this genus that comprises some part of the brachiopods that Pelman figured and placed in another taxon is described. All these species are described using data on shell microsculpture and microstructure. In addition, the genera Eothele and Orbithele are described for the first time from the Siberian Platform.

Hall, J., Palaeontology of New York: Volume 1. Containing Descriptions of the Organic Remains of the Lower Division of the New York System (Equivalent of the Lower Silurian Rocks of Europe), Albany: C. van Benthuysen, 1847.CrossRefGoogle Scholar

Malakhov, V.V., The problem of the general body plan of brachiopods and the position of brachiopods in the system of the kingdom Animalia, in Dokl. 4-oi Mezhdunar. shkoly “Sovremennoe sostoyanie i osnovnye napravleniya izucheniya brakhiopod”, Zvenigorod, 28 oktyabrya–3 noyabrya 1991 g. (Proc. 4th Int. School “The State of the Art and Main Lines in the Study of Brachiopods,” Zvenigorod, October 28–November 3, 1991), Moscow: Paleontol. Inst. Ross. Akad. Nauk, 1995, pp. 51–82.Google Scholar